The utility model discloses a combined detection device of partial discharge and temperature, it includes: temperature sensor, its temperature signal who is configured as transmission sign target temperature size, compound sensing antenna, it is configured as receives and launches the signal, read the ware, its with compound sensing antenna connection, wherein, the reading ware is configured as: receiving in the section at one time the partial discharge signal that the target produced, pass through in another time quantum compound sensing sky line emission drive signal is in order to trigger the temperature sensor transmission temperature signal to receive this temperature signal. Correspondingly, the utility model also discloses a combined detection method of partial discharge and temperature. The utility model discloses a apparatus and method for can timesharing combined detection target (especially high voltage electric power equip ment ) two specific character volumes of partial discharge and temperature to evaluate the state of target better based on the relevance between this two specific characters volume, provide the support for the differentiation repair based on condition of component tactics of equipment.